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Effect of freeze-thaw cycles on soil physicochemical properties and fractions of Pb and Cr in the northeastern Qinghai-Tibet Plateau

文献类型：期刊论文

作者Li, Leiming3,4; Wu, Jun2,3,4; Lu, Jian1; Min, Xiuyun3,4
刊名GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS
出版日期2021-08-01
卷号21期号:3页码:9
关键词freeze-thaw cycle Pb and Cr fractions ecological risk the northeastern Qinghai-Tibet Plateau
ISSN号1467-7873
DOI10.1144/geochem2021-029
通讯作者Wu, Jun(wujunlisa@163.com)
英文摘要Simulation experiments were conducted using soils in the northeastern Qinghai-Tibet Plateau to explore the effects of freeze-thaw cycles on soil physicochemical properties, Pb and Cr distribution, and fraction transformation. Soils were incubated at -15 degrees C for 24 h and at 5 degrees C for 24 h to complete a freeze-thaw cycle. The soil physicochemical properties and fractions of Pb and Cr were analyzed after serial freeze-thaw treatments. The results showed that different freeze-thaw cycles and water content affected soil physicochemical properties and fractions of Pb and Cr to some extent. The cation exchange capacity increased significantly in agricultural and pastoral soils after five freeze-thaw cycles. The sand proportion of soil in an urban area decreased at 60 cycles. Freeze-thaw cycles did not change the functional groups and mineral constituents of the soils. The infrared peaks of soils with different freeze-thaw conditions were very similar. The freeze-thaw treatment influenced the mobility, chemical fractions of Pb and ecological risk in most of the soils. The exchangeable Pb in agricultural and pastoral areas increased from 0.19 to 1.52/0.90% after 5/10 freeze-thaw cycles with 60% water content. The ecological values of Pb in urban soil were 8.32/7.38% higher at 10/15 freeze-thaw cycles compared with the control treatment. Hence, these findings provide useful information on physicochemical properties and fraction transformation of Pb and Cr in soils undergoing freeze-thaw cycles, and offer an additional insight on Pb and Cr behaviors in cold and freezing environments. Thematic collection: This article is part of the Hydrochemistry related to exploration and environmental issues collection available at:
WOS关键词DISSOLVED ORGANIC-MATTER ; AGGREGATE STABILITY ; NITROGEN DYNAMICS ; HEAVY-METALS ; MOISTURE ; POLLUTION ; REMOVAL ; TEXTURE ; CARBON ; RISKS
资助项目Taishan Scholar Program of Shandong Province[tsqn201812116] ; Youth Innovation Team Project for Talent Introduction and Cultivation in Universities of Shandong Province ; Natural Science Foundation of Qinghai Province[2019-ZJ-909] ; Thousand Talents Plan of Qinghai Province ; Two-Hundred Talents Plan of Yantai
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000680860100003
资助机构Taishan Scholar Program of Shandong Province ; Youth Innovation Team Project for Talent Introduction and Cultivation in Universities of Shandong Province ; Natural Science Foundation of Qinghai Province ; Thousand Talents Plan of Qinghai Province ; Two-Hundred Talents Plan of Yantai
源URL[http://ir.yic.ac.cn/handle/133337/29603]  
专题烟台海岸带研究所_近岸生态与环境实验室
烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
通讯作者Wu, Jun
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc,YICCAS, Yantai 264003, Shandong, Peoples R China
2.Ludong Univ, Sch Resources & Environm Engn, Yantai, Yantai 264025, Shandong, Peoples R China
3.Qinghai Prov Key Lab Geol & Environm Salt Lakes, Xining 810008, Qinghai, Peoples R China
4.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China
推荐引用方式
GB/T 7714		 Li, Leiming,Wu, Jun,Lu, Jian,et al. Effect of freeze-thaw cycles on soil physicochemical properties and fractions of Pb and Cr in the northeastern Qinghai-Tibet Plateau[J]. GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS,2021,21(3):9.
APA Li, Leiming,Wu, Jun,Lu, Jian,&Min, Xiuyun.(2021).Effect of freeze-thaw cycles on soil physicochemical properties and fractions of Pb and Cr in the northeastern Qinghai-Tibet Plateau.GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS,21(3),9.
MLA Li, Leiming,et al."Effect of freeze-thaw cycles on soil physicochemical properties and fractions of Pb and Cr in the northeastern Qinghai-Tibet Plateau".GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS 21.3(2021):9.

入库方式： OAI收割

来源：烟台海岸带研究所

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